This observation can be explained by the theory of endosymbiosis. From what scientists have discovered, it can be explained that the double membrane of both chloroplast and mitochondria are as a result of them been subjected to phagocytosis but they were not digested. Their DNA suggest that they were once free living prokaryotes. This agree with the endosymbiosis theory which states that eukaryotic cell organelles developed from prokaryotic cells.
A A population has just begun to grow
Answer: diastema
Explanation:
Diastema is condition in which a gap develops in between the two teeth. The spaces or gaps develop in the upper front teeth. The space or gap may appear between the biting teeth (canines or incisors) and in between the grinding teeth (molars or premolars). This occurs when there is unequal relationship develop between the size of jaw and teeth. The space can be too large that it can accommodate the parts of lower canine.
According to the above description, the condition can be considered as diastema.
Answer & explanation:
A confidence interval is an estimated range of a parameter of interest. Confidence intervals are used to indicate the reliability of an estimate. For example, a confidence interval can be used to describe how reliable a search result is.
In other words, a high confidence interval Z value implies that a survey is more likely to indicate the actual values being presented.
In biostatistics, for example, the Z value can be used in calculations to assess the prevalence of a particular disease and the factors associated with it in a population.
The value of Z, however, is not used as a percentage (like the 99.5% addressed in this question) for calculations. A universal table is used to convert Z values and use them in statistical calculations.
Some examples of Z value conversions can be found in the table attached in this question.